Speaker
Description
Standard Model is neither phenomenologically nor theoretically complete theory of fundamental physics. Many of its motivated extensions predict phase transitions in the early Universe, which, if source the gravitational wave production, may be probed with present and future instruments aimed at measurement of gravitational waves. This is a unique way to trace the history of the early Universe before the Big Bang Nucleosynthesis and search for the new physics at energy scales far above the scale we explore and plan to explore at the Large Hadron Collider and its feasible successors. The statement will be illustrated with an example of simple scalar dark matter and phase transitions accompanied by the domain wall production. The domain wall network generates the gravitational waves, which spectrum (if measured) can tell us about the birth, evolution and death of the network and hence can pin down the new physics parameters responsible for the phase transition and dark matter production. We will describe in detail the network evolution with various initial conditions and for a set of mechanisms destroying this dangerous for cosmology structure.
